Making a minicamp mandatory brings out Michael Bennett and Bruce Irvin.

The Seahawks’ defensive end and outside linebacker were inside team headquarters in Renton on Tuesday for the start of Seattle’s only mandatory minicamp of the offseason, one that will run through Thursday.

Bennett and Irvin’s presence was reported by a league source, who spoke anonymously because the team didn’t announce the players’ attendance.

Bennett and Irvin had skipped voluntary organized team activities — at least on the field — and workouts this spring.

Bennett wants a raise above the four-year, $28.5 million contract he signed before last season. Irvin isn’t happy that Seattle decided to not exercise his $7.8 million contract option for 2016, meaning the $1,663,935 he’ll earn for the coming season is the final one of his rookie deal.

Since 2010, the Seahawks have a policy under general manager John Schneider of not renegotiating contracts that have more than one year remaining.

Teammate Richard Sherman said last week that Bennett has been inside the team’s building, but hasn’t been coming out for the no-pads drills on the field.

Coach Pete Carroll has said the team wants Irvin back beyond this season — assuredly with an extension that counts far less than that $7.8 million annually against its salary cap — and that Irvin knows Seattle’s plans and interest.

Tuesday was only kind of the start of minicamp. The NFL docked the Seahawks two of what was supposed to be three days on the field this week and fined them $300,000 after deciding that the team was too physical in offseason workouts in 2014.

There was no definitive word if Marshawn Lynch was present Tuesday, but if he is on the field Thursday for the only minicamp practice it would be a surprise. The star running back’s usual offseason routine involves staying away from team HQ until training camp begins. But he could be present at the Virginia Mason Athletic Center this week — to avoid team fines that could top $70,000 — yet not practice Thursday.

Lynch signed a two-year contract extension in March that gave him $5 million more guaranteed this year. So he could afford any fines for a no-show.

Another player present for the minicamp was Tarvaris Jackson. The team made official what became known last week: that the veteran backup quarterback, and 2011 starter before Russell Wilson arrived, has a contract to return this season.

SHERMAN A ‘GOOD GUY’

The Pro Football Writers Association on Tuesday announced that Sherman was the winner of its NFL Good Guy Award as the player who cooperated most consistently with the media last season.

The All-Pro cornerback followed in the footsteps of Wilson, who won the honor last year. That makes Seattle the first team in the decade-long history of the Good Guy Award to have a player win it in consecutive seasons.